Carburetor



April 2,1935. D. COLE 1,996,406

CARBURETOR Filed Aug. 7, 1930 INVENTOR. 170M [4745 BY A I ATTORNEY Patented Apr. 2, 19 35 UNITED STATES PATENT orFrcE 1 Claim.

This invention relates to automobile control devices and more particularly has reference to means for automatically opening the throttle by the operation of the starter pedal.

5 As the conventional accelerator pedal in an automobile, when not depressed, normally holds the throttle of the carburetor closed, it is generally necessary in starting the engine to slightly open or crack the throttle by the manual manipulation of a hand lever on the steering wheel. This operation is often overlooked even by experienced drivers and makes the starting of the engine difilcult, if not impossible. And even if not overlooked, it always constitutes an additional operation in starting which it is desirable to eliminate.

An object of my invention is to obviate the necessity of manually cracking the throttle in starting by hooking it up with the starter pedal 20 so that it will be automatically cracked whenever the starter pedal is operated.

With this and other objects in view, which may be incident to my improvements, my invention consists in the combination and arrangement of 25 elements hereinafter described and illustrated in the accompanying drawing which shows in outline the side elevation of a conventional automobile engine with my improvements attached.

In the drawing, I denotes the chassis of an 30 automobile upon which is mounted an engine 2,

a starting motor 3 and floor board 4. Protruding through holes in the floor board 4 are the conventional accelerator pedal 5 and starter pedal 6.

Pedal 5 is pivotally connected to a rocker arm I 35 mounted upon chassis I and also to a rod 8 which in turn is pivotally attached to throttle lever 9 of a carburetor I0, so that when pedal 5 is depressed, throttle I is opened in the usual way.

A spring II, attached at one end to arm I and anchored at its other end to chassis I, keeps pedal in its uppermost position and throttle I0 normally closed.

Similarly, pedal 6 is pivotally connected with a rocker arm I2 mounted upon chassis I and articulated with link I3 to rocker arm I 4 which is so mounted upon chassis I as to engage starting button I5 of starter 3 whenever pedal 6 is fully depressed. A spring IB, attached at one end to arm I 2 and anchored at its other end to chassis I, normally keeps arms I2 and I4 and pedal 6 in their uppermost position. Pivotally connected to arm 5 I2 is a slotted lost-motion link II having an adjustable screw I8 which engages a pin I9 on the end of pedal 5 whenever pedal 6 is depressed. and pedal 5 is not depressed. By this arrangement, every time pedal 6 is depressed for starting the enlo gine, link I! pulls arm I to the left with arm I2 and automatically cracks the throttle of carburetor I0. Adjustable screw I8 fixes the amount of throw of arm I with respect to arm I2 and thus determines how much the throttle will be cracked 15 by the operation of starter pedal 6. As soon as pedal 6 is released, spring I6 returns it and arm I2 to their uppermost positions and the slot in link I! then permits the normal operation of the throttle by accelerator pedal 5.

While I have shown and described the preferred embodiment of my invention, I wish it to be understood that I do not intend to limit myself to the constructional forms shown by way of illustration, as changes in combination and arrangement of elements may be made by those skilled in the art without departing from the spirt of my ,invention or exceeding the scope of the appended claim.

I claim:

In a control device for an internal combustion motor, a carburetor throttle, a foot-operated jointed accelerating member connected to the throttle, a supporting memberhaving one end connected to the joint of the accelerating member 35 and its other end pivoted to a fixed point, a manually operable starter member, and a member pivoted to the starter member and having an elongated slot embracing said joint to form a lost motion connection between the accelerating 0v member and the starter member so constructed and arranged that actuation of the starter member opens the throttle slightly but the starter member when in released position does not affect the operation of the accelerating member.

- 'DON COLE. 

